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package com.android.server.wifi.anqp;
import java.net.ProtocolException;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.charset.Charset;
import java.util.HashMap;
import java.util.Map;
/**
* ANQP related constants (802.11-2012)
*/
public class Constants {
public static final int NIBBLE_MASK = 0x0f;
public static final int BYTE_MASK = 0xff;
public static final int SHORT_MASK = 0xffff;
public static final long INT_MASK = 0xffffffffL;
public static final int BYTES_IN_SHORT = 2;
public static final int BYTES_IN_INT = 4;
public static final int BYTES_IN_EUI48 = 6;
public static final int HS20_PREFIX = 0x119a6f50; // Note that this is represented as a LE int
public static final int HS20_FRAME_PREFIX = 0x109a6f50;
public static final int UTF8_INDICATOR = 1;
public static final int ANQP_QUERY_LIST = 256;
public static final int ANQP_CAPABILITY_LIST = 257;
public static final int ANQP_VENUE_NAME = 258;
public static final int ANQP_EMERGENCY_NUMBER = 259;
public static final int ANQP_NWK_AUTH_TYPE = 260;
public static final int ANQP_ROAMING_CONSORTIUM = 261;
public static final int ANQP_IP_ADDR_AVAILABILITY = 262;
public static final int ANQP_NAI_REALM = 263;
public static final int ANQP_3GPP_NETWORK = 264;
public static final int ANQP_GEO_LOC = 265;
public static final int ANQP_CIVIC_LOC = 266;
public static final int ANQP_LOC_URI = 267;
public static final int ANQP_DOM_NAME = 268;
public static final int ANQP_EMERGENCY_ALERT = 269;
public static final int ANQP_TDLS_CAP = 270;
public static final int ANQP_EMERGENCY_NAI = 271;
public static final int ANQP_NEIGHBOR_REPORT = 272;
public static final int ANQP_VENDOR_SPEC = 56797;
public static final int HS_QUERY_LIST = 1;
public static final int HS_CAPABILITY_LIST = 2;
public static final int HS_FRIENDLY_NAME = 3;
public static final int HS_WAN_METRICS = 4;
public static final int HS_CONN_CAPABILITY = 5;
public static final int HS_NAI_HOME_REALM_QUERY = 6;
public static final int HS_OPERATING_CLASS = 7;
public static final int HS_OSU_PROVIDERS = 8;
public static final int HS_ICON_REQUEST = 10;
public static final int HS_ICON_FILE = 11;
public enum ANQPElementType {
ANQPQueryList,
ANQPCapabilityList,
ANQPVenueName,
ANQPEmergencyNumber,
ANQPNwkAuthType,
ANQPRoamingConsortium,
ANQPIPAddrAvailability,
ANQPNAIRealm,
ANQP3GPPNetwork,
ANQPGeoLoc,
ANQPCivicLoc,
ANQPLocURI,
ANQPDomName,
ANQPEmergencyAlert,
ANQPTDLSCap,
ANQPEmergencyNAI,
ANQPNeighborReport,
ANQPVendorSpec,
HSQueryList,
HSCapabilityList,
HSFriendlyName,
HSWANMetrics,
HSConnCapability,
HSNAIHomeRealmQuery,
HSOperatingclass,
HSOSUProviders,
HSIconRequest,
HSIconFile
}
private static final Map<Integer, ANQPElementType> sAnqpMap = new HashMap<Integer, ANQPElementType>();
private static final Map<Integer, ANQPElementType> sHs20Map = new HashMap<Integer, ANQPElementType>();
private static final Map<ANQPElementType, Integer> sRevAnqpmap = new HashMap<ANQPElementType, Integer>();
private static final Map<ANQPElementType, Integer> sRevHs20map = new HashMap<ANQPElementType, Integer>();
static {
sAnqpMap.put(ANQP_QUERY_LIST, ANQPElementType.ANQPQueryList);
sAnqpMap.put(ANQP_CAPABILITY_LIST, ANQPElementType.ANQPCapabilityList);
sAnqpMap.put(ANQP_VENUE_NAME, ANQPElementType.ANQPVenueName);
sAnqpMap.put(ANQP_EMERGENCY_NUMBER, ANQPElementType.ANQPEmergencyNumber);
sAnqpMap.put(ANQP_NWK_AUTH_TYPE, ANQPElementType.ANQPNwkAuthType);
sAnqpMap.put(ANQP_ROAMING_CONSORTIUM, ANQPElementType.ANQPRoamingConsortium);
sAnqpMap.put(ANQP_IP_ADDR_AVAILABILITY, ANQPElementType.ANQPIPAddrAvailability);
sAnqpMap.put(ANQP_NAI_REALM, ANQPElementType.ANQPNAIRealm);
sAnqpMap.put(ANQP_3GPP_NETWORK, ANQPElementType.ANQP3GPPNetwork);
sAnqpMap.put(ANQP_GEO_LOC, ANQPElementType.ANQPGeoLoc);
sAnqpMap.put(ANQP_CIVIC_LOC, ANQPElementType.ANQPCivicLoc);
sAnqpMap.put(ANQP_LOC_URI, ANQPElementType.ANQPLocURI);
sAnqpMap.put(ANQP_DOM_NAME, ANQPElementType.ANQPDomName);
sAnqpMap.put(ANQP_EMERGENCY_ALERT, ANQPElementType.ANQPEmergencyAlert);
sAnqpMap.put(ANQP_TDLS_CAP, ANQPElementType.ANQPTDLSCap);
sAnqpMap.put(ANQP_EMERGENCY_NAI, ANQPElementType.ANQPEmergencyNAI);
sAnqpMap.put(ANQP_NEIGHBOR_REPORT, ANQPElementType.ANQPNeighborReport);
sAnqpMap.put(ANQP_VENDOR_SPEC, ANQPElementType.ANQPVendorSpec);
sHs20Map.put(HS_QUERY_LIST, ANQPElementType.HSQueryList);
sHs20Map.put(HS_CAPABILITY_LIST, ANQPElementType.HSCapabilityList);
sHs20Map.put(HS_FRIENDLY_NAME, ANQPElementType.HSFriendlyName);
sHs20Map.put(HS_WAN_METRICS, ANQPElementType.HSWANMetrics);
sHs20Map.put(HS_CONN_CAPABILITY, ANQPElementType.HSConnCapability);
sHs20Map.put(HS_NAI_HOME_REALM_QUERY, ANQPElementType.HSNAIHomeRealmQuery);
sHs20Map.put(HS_OPERATING_CLASS, ANQPElementType.HSOperatingclass);
sHs20Map.put(HS_OSU_PROVIDERS, ANQPElementType.HSOSUProviders);
sHs20Map.put(HS_ICON_REQUEST, ANQPElementType.HSIconRequest);
sHs20Map.put(HS_ICON_FILE, ANQPElementType.HSIconFile);
for (Map.Entry<Integer, ANQPElementType> entry : sAnqpMap.entrySet()) {
sRevAnqpmap.put(entry.getValue(), entry.getKey());
}
for (Map.Entry<Integer, ANQPElementType> entry : sHs20Map.entrySet()) {
sRevHs20map.put(entry.getValue(), entry.getKey());
}
}
public static ANQPElementType mapANQPElement(int id) {
return sAnqpMap.get(id);
}
public static ANQPElementType mapHS20Element(int id) {
return sHs20Map.get(id);
}
public static Integer getANQPElementID(ANQPElementType elementType) {
return sRevAnqpmap.get(elementType);
}
public static Integer getHS20ElementID(ANQPElementType elementType) {
return sRevHs20map.get(elementType);
}
public static long getInteger(ByteBuffer payload, ByteOrder bo, int size) {
byte[] octets = new byte[size];
payload.get(octets);
long value = 0;
if (bo == ByteOrder.LITTLE_ENDIAN) {
for (int n = octets.length - 1; n >= 0; n--) {
value = (value << Byte.SIZE) | (octets[n] & BYTE_MASK);
}
}
else {
for (byte octet : octets) {
value = (value << Byte.SIZE) | (octet & BYTE_MASK);
}
}
return value;
}
public static String getPrefixedString(ByteBuffer payload, int lengthLength, Charset charset)
throws ProtocolException {
return getPrefixedString(payload, lengthLength, charset, false);
}
public static String getPrefixedString(ByteBuffer payload, int lengthLength, Charset charset,
boolean useNull) throws ProtocolException {
if (payload.remaining() < lengthLength) {
throw new ProtocolException("Runt string: " + payload.remaining());
}
return getString(payload, (int) getInteger(payload, ByteOrder.LITTLE_ENDIAN,
lengthLength), charset, useNull);
}
public static String getString(ByteBuffer payload, int length, Charset charset)
throws ProtocolException {
return getString(payload, length, charset, false);
}
public static String getString(ByteBuffer payload, int length, Charset charset, boolean useNull)
throws ProtocolException {
if (length > payload.remaining()) {
throw new ProtocolException("Bad string length: " + length);
}
if (useNull && length == 0) {
return null;
}
byte[] octets = new byte[length];
payload.get(octets);
return new String(octets, charset);
}
}
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